Skip to main content

Table 7 Mean ± standard deviation of the different growth parameters for plantation forest

From: Aboveground biomass, growth and yield for some selected introduced tree species, namely Cupressus lusitanica, Eucalyptus saligna, and Pinus patula in Central Highlands of Ethiopia

Plot NoSpeciesMean Dbh (cm)Mean height (m)No (N ha-1)Basal area (m2 ha-1)Volume (m3 ha-1)Average Diameter increment
(cm)
Average Height (m)Vincrement (m3ha-1yr-1)G increment (m2 ha-1 yr-1)Vincrement (m3tree yr)BA increment (m-2 tree year)
2012201720122017201220172012201720122017
01C. lusitanica21.7323.2217.5019.3275075029.2032.96222.78272.771.491.8210.000.760.01330.001
0223.0128.4718.5422.3337537516.0124.47128.06233.405.453.7921.061.690.05620.0045
0327.4431.0823.4426.3932532519.6824.92197.02277.543.642.9516.111.0470.04960.0032
Mean ± SE CL24.06±2.9927.59±4.0019.83±3.1722.68±3.55483.33±232.29483.33±232.2921.63±6.8127.45±4.77182.62±48.98261.24±24.232.53±1.982.85±0.9915.72±5.541.17±0.480.04±0.020.003±0.002
04E. saligna12.7018.4813.9619.875255258.0215.3755.62139.995.775.9116.881.4710.03210.0028
0514.2119.1817.7523.275005008.7515.0769.35153.114.975.5216.781.2650.03350.0025
0612.0615.9516.6520.965005006.7110.8253.34101.803.894.319.690.8230.01940.0017
Mean± SE ES12.99±1.1017.87±1.7016.12±1.9521.37±1.74508.33±14.43508.33±14.437.83±1.0313.75±2.5559.44±8.66131.63±26.664.88±0.945.25±0.8314.45±4.121.19±0.330.03±0.0080.0023±0.0006
07Pinus patula16.8018.1918.4320.081100110025.5529.67205.79257.051.401.6510.250.8240.00930.0008
0812.0214.5516.2618.341375137517.1724.00128.33194.592.532.0713.251.3660.00960.0010
0915.6717.2722.5823.8792592519.1922.75191.19236.441.601.299.050.7100.00960.0008
Mean± SE PP14.83±2.5016.67±1.8919.00±3.2120.76±2.831133.33±226.841133.33±226.8420.64±4.3725.47±3.69175.10±41.16229.36±31.831.84±0.601.67±0.3910.85±2.160.97±0.350.0095±0.00020.001±0.00012
  1. DBH Diameter at breast height, N number of stems, ha hectare, CL Cupressus lusitanica, ES Eucalyptus saligna, PP Pinus patula, SE standard error of the mean